Pier Angelo Vendrame pushed to branch base-browser-128.2.0esr-14.0-1 at The Tor Project / Applications / Tor Browser

Commits:

12 changed files:

Changes:

  • browser/components/resistfingerprinting/test/mochitest/mochitest.toml
    ... ... @@ -27,8 +27,6 @@ scheme = "https"
    27 27 
     scheme = "https"
    28 28 
     support-files = ["test_hide_gamepad_info_iframe.html"]
    29 29
    30 
    -["test_iframe.html"]
    31 
    -
    32 30 
     ["test_keyboard_event.html"]
    33 31
    34 32 
     ["test_pointer_event.html"]
    ... ... @@ -36,3 +34,5 @@ support-files = ["../../../../../dom/events/test/pointerevents/mochitest_support
    36 34
    37 35 
     ["test_speech_synthesis.html"]
    38 36 
     skip-if = ["verify"]
    37 
    +
    38 
    +["test_bug1885101_screenwindow_sizes.html"]

  • browser/components/resistfingerprinting/test/mochitest/test_bug1885101_screenwindow_sizes.html
    1 
    +<!DOCTYPE html>
    2 
    +<html>
    3 
    +  <head>
    4 
    +    <title>Tests if +WindowOuterSizeExceptIFrame works properly</title>
    5 
    +    <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css" />
    6 
    +    <script src="/tests/SimpleTest/SimpleTest.js"></script>
    7 
    +  </head>
    8 
    +
    9 
    +  <body>
    10 
    +    <iframe id="mainFrame"></iframe>
    11 
    +
    12 
    +    <template id="mainFrameContents">
    13 
    +      <script>
    14 
    +        window.parent.postMessage(
    15 
    +          {
    16 
    +            screen: {
    17 
    +              height: window.screen.height,
    18 
    +              width: window.screen.width,
    19 
    +              availHeight: window.screen.availHeight,
    20 
    +              availWidth: window.screen.availWidth,
    21 
    +            },
    22 
    +            outerHeight,
    23 
    +            outerWidth,
    24 
    +          },
    25 
    +          "*"
    26 
    +        );
    27 
    +      </script>
    28 
    +    </template>
    29 
    +
    30 
    +    <script>
    31 
    +      document.addEventListener("DOMContentLoaded", function () {
    32 
    +        SimpleTest.waitForExplicitFinish();
    33 
    +
    34 
    +        window.addEventListener("message", e => {
    35 
    +          const data = e.data;
    36 
    +
    37 
    +          // Check for outer size
    38 
    +          SimpleTest.is(
    39 
    +            data.outerHeight,
    40 
    +            window.outerHeight,
    41 
    +            "iframe's window.outerHeight should be equal to window.top.outerHeight"
    42 
    +          );
    43 
    +
    44 
    +          SimpleTest.is(
    45 
    +            data.outerWidth,
    46 
    +            window.outerWidth,
    47 
    +            "iframe's window.outerWidth should be equal to window.top.outerWidth"
    48 
    +          );
    49 
    +
    50 
    +          // Check for screen size
    51 
    +          SimpleTest.is(
    52 
    +            data.screen.height,
    53 
    +            window.screen.height,
    54 
    +            "iframe's window.screen.height should be equal to window.top.screen.height"
    55 
    +          );
    56 
    +
    57 
    +          SimpleTest.is(
    58 
    +            data.screen.width,
    59 
    +            window.screen.width,
    60 
    +            "iframe's window.screen.width should be equal to window.top.screen.width"
    61 
    +          );
    62 
    +
    63 
    +          // Check for avail size
    64 
    +          SimpleTest.is(
    65 
    +            data.screen.availHeight,
    66 
    +            window.screen.availHeight,
    67 
    +            "iframe's window.screen.availHeight should be equal to window.top.screen.availHeight"
    68 
    +          );
    69 
    +
    70 
    +          SimpleTest.is(
    71 
    +            data.screen.availWidth,
    72 
    +            window.screen.availWidth,
    73 
    +            "iframe's window.screen.availWidth should be equal to window.top.screen.availWidth"
    74 
    +          );
    75 
    +
    76 
    +          SimpleTest.finish();
    77 
    +        });
    78 
    +
    79 
    +        function setFrameSource() {
    80 
    +          const frame = document.getElementById("mainFrame");
    81 
    +          const template = document.getElementById("mainFrameContents");
    82 
    +          frame.srcdoc = template.innerHTML;
    83 
    +        }
    84 
    +
    85 
    +        SpecialPowers.pushPrefEnv(
    86 
    +          {
    87 
    +            set: [
    88 
    +              ["privacy.fingerprintingProtection", true],
    89 
    +              [
    90 
    +                "privacy.fingerprintingProtection.overrides",
    91 
    +                "+WindowOuterSize,+ScreenRect,+ScreenAvailRect",
    92 
    +              ],
    93 
    +            ],
    94 
    +          },
    95 
    +          () => setFrameSource()
    96 
    +        );
    97 
    +      });
    98 
    +    </script>
    99 
    +  </body>
    100 
    +</html>

  • browser/components/resistfingerprinting/test/mochitest/test_iframe.html deleted
    1 
    -<!doctype html>
    2 
    -<script src="/tests/SimpleTest/SimpleTest.js"></script>
    3 
    -<link rel="stylesheet" href="/tests/SimpleTest/test.css"/>
    4 
    -<body>
    5 
    -<script>
    6 
    -  add_task(async function() {
    7 
    -    await SpecialPowers.pushPrefEnv({
    8 
    -      "set": [["privacy.resistFingerprinting", true]],
    9 
    -    });
    10 
    -    is(screen.width, window.innerWidth, "Width should be spoofed");
    11 
    -    is(screen.height, window.innerHeight, "Height should be spoofed");
    12 
    -    let iframe = document.createElement("iframe");
    13 
    -    document.body.appendChild(iframe);
    14 
    -    is(iframe.contentWindow.screen.width, iframe.contentWindow.innerWidth, "Width should be spoofed in iframe");
    15 
    -    is(iframe.contentWindow.screen.height, iframe.contentWindow.innerHeight, "Height should be spoofed in iframe");
    16 
    -  });
    17 
    -</script>
    18 
    -</body>

  • docshell/base/BrowsingContext.h
    ... ... @@ -272,7 +272,10 @@ struct EmbedderColorSchemes {
    272 272 
       /* If true, this browsing context is within a hidden embedded document. */  \
    273 273 
       FIELD(IsUnderHiddenEmbedderElement, bool)                                   \
    274 274 
       /* If true, this browsing context is offline */                             \
    275 
    -  FIELD(ForceOffline, bool)
    275 
    +  FIELD(ForceOffline, bool)                                                   \
    276 
    +  /* Used to propagate window.top's inner size for RFPTarget::Window*         \
    277 
    +   * protections */                                                           \
    278 
    +  FIELD(TopInnerSizeForRFP, CSSIntSize)
    276 279
    277 280 
     // BrowsingContext, in this context, is the cross process replicated
    278 281 
     // environment in which information about documents is stored. In
    ... ... @@ -1253,6 +1256,10 @@ class BrowsingContext : public nsILoadContext, public nsWrapperCache {
    1253 1256 
       bool CanSet(FieldIndex<IDX_ForceOffline>, bool aNewValue,
    1254 1257 
                   ContentParent* aSource);
    1255 1258
    1259 
    +  bool CanSet(FieldIndex<IDX_TopInnerSizeForRFP>, bool, ContentParent*) {
    1260 
    +    return IsTop();
    1261 
    +  }
    1262 
    +
    1256 1263 
       bool CanSet(FieldIndex<IDX_EmbeddedInContentDocument>, bool,
    1257 1264 
                   ContentParent* aSource) {
    1258 1265 
         return CheckOnlyEmbedderCanSet(aSource);

  • docshell/base/CanonicalBrowsingContext.cpp
    ... ... @@ -324,6 +324,7 @@ void CanonicalBrowsingContext::ReplacedBy(
    324 324 
       txn.SetHasRestoreData(GetHasRestoreData());
    325 325 
       txn.SetShouldDelayMediaFromStart(GetShouldDelayMediaFromStart());
    326 326 
       txn.SetForceOffline(GetForceOffline());
    327 
    +  txn.SetTopInnerSizeForRFP(GetTopInnerSizeForRFP());
    327 328
    328 329 
       // Propagate some settings on BrowsingContext replacement so they're not lost
    329 330 
       // on bfcached navigations. These are important for GeckoView (see bug

  • dom/base/nsGlobalWindowOuter.cpp
    ... ... @@ -3513,9 +3513,10 @@ CSSIntSize nsGlobalWindowOuter::GetOuterSize(CallerType aCallerType,
    3513 3513 
                                                  ErrorResult& aError) {
    3514 3514 
       if (nsIGlobalObject::ShouldResistFingerprinting(aCallerType,
    3515 3515 
                                                       RFPTarget::WindowOuterSize)) {
    3516 
    -    CSSSize size;
    3517 
    -    aError = GetInnerSize(size);
    3518 
    -    return RoundedToInt(size);
    3516 
    +    if (BrowsingContext* bc = GetBrowsingContext()) {
    3517 
    +      return bc->Top()->GetTopInnerSizeForRFP();
    3518 
    +    }
    3519 
    +    return {};
    3519 3520 
       }
    3520 3521
    3521 3522 
       // Windows showing documents in RDM panes and any subframes within them

  • dom/base/nsScreen.cpp
    ... ... @@ -62,7 +62,7 @@ nsDeviceContext* nsScreen::GetDeviceContext() const {
    62 62 
     CSSIntRect nsScreen::GetRect() {
    63 63 
       // Return window inner rect to prevent fingerprinting.
    64 64 
       if (ShouldResistFingerprinting(RFPTarget::ScreenRect)) {
    65 
    -    return GetWindowInnerRect();
    65 
    +    return GetTopWindowInnerRectForRFP();
    66 66 
       }
    67 67
    68 68 
       // Here we manipulate the value of aRect to represent the screen size,
    ... ... @@ -91,7 +91,7 @@ CSSIntRect nsScreen::GetRect() {
    91 91 
     CSSIntRect nsScreen::GetAvailRect() {
    92 92 
       // Return window inner rect to prevent fingerprinting.
    93 93 
       if (ShouldResistFingerprinting(RFPTarget::ScreenAvailRect)) {
    94 
    -    return GetWindowInnerRect();
    94 
    +    return GetTopWindowInnerRectForRFP();
    95 95 
       }
    96 96
    97 97 
       // Here we manipulate the value of aRect to represent the screen size,
    ... ... @@ -165,18 +165,14 @@ JSObject* nsScreen::WrapObject(JSContext* aCx,
    165 165 
       return Screen_Binding::Wrap(aCx, this, aGivenProto);
    166 166 
     }
    167 167
    168 
    -CSSIntRect nsScreen::GetWindowInnerRect() {
    169 
    -  nsCOMPtr<nsPIDOMWindowInner> win = GetOwner();
    170 
    -  if (!win) {
    171 
    -    return {};
    172 
    -  }
    173 
    -  double width;
    174 
    -  double height;
    175 
    -  if (NS_FAILED(win->GetInnerWidth(&width)) ||
    176 
    -      NS_FAILED(win->GetInnerHeight(&height))) {
    177 
    -    return {};
    168 
    +CSSIntRect nsScreen::GetTopWindowInnerRectForRFP() {
    169 
    +  if (nsPIDOMWindowInner* inner = GetOwner()) {
    170 
    +    if (BrowsingContext* bc = inner->GetBrowsingContext()) {
    171 
    +      CSSIntSize size = bc->Top()->GetTopInnerSizeForRFP();
    172 
    +      return {0, 0, size.width, size.height};
    173 
    +    }
    178 174 
       }
    179 
    -  return {0, 0, int32_t(std::round(width)), int32_t(std::round(height))};
    175 
    +  return {};
    180 176 
     }
    181 177
    182 178 
     bool nsScreen::ShouldResistFingerprinting(RFPTarget aTarget) const {

  • dom/base/nsScreen.h
    ... ... @@ -88,7 +88,7 @@ class nsScreen : public mozilla::DOMEventTargetHelper {
    88 88 
       nsDeviceContext* GetDeviceContext() const;
    89 89 
       mozilla::CSSIntRect GetRect();
    90 90 
       mozilla::CSSIntRect GetAvailRect();
    91 
    -  mozilla::CSSIntRect GetWindowInnerRect();
    91 
    +  mozilla::CSSIntRect GetTopWindowInnerRectForRFP();
    92 92
    93 93 
      private:
    94 94 
       virtual ~nsScreen();

  • dom/base/test/chrome/bug418986-1.js
    ... ... @@ -24,14 +24,14 @@ var test = function (isContent) {
    24 24 
         ["mozInnerScreenY", 0],
    25 25 
         ["screen.pixelDepth", 24],
    26 26 
         ["screen.colorDepth", 24],
    27 
    -    ["screen.availWidth", "innerWidth"],
    28 
    -    ["screen.availHeight", "innerHeight"],
    27 
    +    ["screen.availWidth", "outerWidth"],
    28 
    +    ["screen.availHeight", "outerHeight"],
    29 29 
         ["screen.left", 0],
    30 30 
         ["screen.top", 0],
    31 31 
         ["screen.availLeft", 0],
    32 32 
         ["screen.availTop", 0],
    33 
    -    ["screen.width", "innerWidth"],
    34 
    -    ["screen.height", "innerHeight"],
    33 
    +    ["screen.width", "outerWidth"],
    34 
    +    ["screen.height", "outerHeight"],
    35 35 
         ["screen.orientation.type", "'landscape-primary'"],
    36 36 
         ["screen.orientation.angle", 0],
    37 37 
         ["screen.mozOrientation", "'landscape-primary'"],

  • layout/base/nsPresContext.cpp
    ... ... @@ -1459,6 +1459,32 @@ void nsPresContext::SetOverrideDPPX(float aDPPX) {
    1459 1459 
                                 MediaFeatureChangePropagation::JustThisDocument);
    1460 1460 
     }
    1461 1461
    1462 
    +void nsPresContext::UpdateTopInnerSizeForRFP() {
    1463 
    +  if (!mDocument->ShouldResistFingerprinting(RFPTarget::WindowOuterSize) ||
    1464 
    +      !mDocument->GetBrowsingContext() ||
    1465 
    +      !mDocument->GetBrowsingContext()->IsTop()) {
    1466 
    +    return;
    1467 
    +  }
    1468 
    +
    1469 
    +  CSSSize size = CSSPixel::FromAppUnits(GetVisibleArea().Size());
    1470 
    +
    1471 
    +  switch (StaticPrefs::dom_innerSize_rounding()) {
    1472 
    +    case 1:
    1473 
    +      size.width = std::roundf(size.width);
    1474 
    +      size.height = std::roundf(size.height);
    1475 
    +      break;
    1476 
    +    case 2:
    1477 
    +      size.width = std::truncf(size.width);
    1478 
    +      size.height = std::truncf(size.height);
    1479 
    +      break;
    1480 
    +    default:
    1481 
    +      break;
    1482 
    +  }
    1483 
    +
    1484 
    +  Unused << mDocument->GetBrowsingContext()->SetTopInnerSizeForRFP(
    1485 
    +      CSSIntSize{(int)size.width, (int)size.height});
    1486 
    +}
    1487 
    +
    1462 1488 
     gfxSize nsPresContext::ScreenSizeInchesForFontInflation(bool* aChanged) {
    1463 1489 
       if (aChanged) {
    1464 1490 
         *aChanged = false;
    ... ... @@ -2972,6 +2998,8 @@ void nsPresContext::SetVisibleArea(const nsRect& r) {
    2972 2998 
               {mozilla::MediaFeatureChangeReason::ViewportChange},
    2973 2999 
               MediaFeatureChangePropagation::JustThisDocument);
    2974 3000 
         }
    3001 
    +
    3002 
    +    UpdateTopInnerSizeForRFP();
    2975 3003 
       }
    2976 3004 
     }
    2977 3005

  • layout/base/nsPresContext.h
    ... ... @@ -540,6 +540,7 @@ class nsPresContext : public nsISupports, public mozilla::SupportsWeakPtr {
    540 540 
       void SetFullZoom(float aZoom);
    541 541 
       void SetOverrideDPPX(float);
    542 542 
       void SetInRDMPane(bool aInRDMPane);
    543 
    +  void UpdateTopInnerSizeForRFP();
    543 544
    544 545 
      public:
    545 546 
       float GetFullZoom() { return mFullZoom; }

  • toolkit/components/resistfingerprinting/tests/browser/browser_fingerprintingWebCompat.js
    ... ... @@ -34,12 +34,12 @@ const TEST_CASES = [
    34 34 
           {
    35 35 
             id: "1",
    36 36 
             last_modified: 1000000000000001,
    37 
    -        overrides: "+WindowOuterSize",
    37 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    38 38 
             firstPartyDomain: "*",
    39 39 
           },
    40 40 
         ],
    41 41 
         expects: {
    42 
    -      windowOuter: {
    42 
    +      screenAvailRect: {
    43 43 
             top: true,
    44 44 
             firstParty: true,
    45 45 
             thirdParty: true,
    ... ... @@ -57,12 +57,12 @@ const TEST_CASES = [
    57 57 
           {
    58 58 
             id: "1",
    59 59 
             last_modified: 1000000000000001,
    60 
    -        overrides: "+WindowOuterSize",
    60 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    61 61 
             firstPartyDomain: "example.com",
    62 62 
           },
    63 63 
         ],
    64 64 
         expects: {
    65 
    -      windowOuter: {
    65 
    +      screenAvailRect: {
    66 66 
             top: true,
    67 67 
             firstParty: true,
    68 68 
             thirdParty: false,
    ... ... @@ -80,13 +80,13 @@ const TEST_CASES = [
    80 80 
           {
    81 81 
             id: "1",
    82 82 
             last_modified: 1000000000000001,
    83 
    -        overrides: "+WindowOuterSize",
    83 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    84 84 
             firstPartyDomain: "example.com",
    85 85 
             thirdPartyDomain: "*",
    86 86 
           },
    87 87 
         ],
    88 88 
         expects: {
    89 
    -      windowOuter: {
    89 
    +      screenAvailRect: {
    90 90 
             top: true,
    91 91 
             firstParty: true,
    92 92 
             thirdParty: true,
    ... ... @@ -104,13 +104,13 @@ const TEST_CASES = [
    104 104 
           {
    105 105 
             id: "1",
    106 106 
             last_modified: 1000000000000001,
    107 
    -        overrides: "+WindowOuterSize",
    107 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    108 108 
             firstPartyDomain: "example.com",
    109 109 
             thirdPartyDomain: "example.org",
    110 110 
           },
    111 111 
         ],
    112 112 
         expects: {
    113 
    -      windowOuter: {
    113 
    +      screenAvailRect: {
    114 114 
             top: false,
    115 115 
             firstParty: false,
    116 116 
             thirdParty: true,
    ... ... @@ -128,13 +128,13 @@ const TEST_CASES = [
    128 128 
           {
    129 129 
             id: "1",
    130 130 
             last_modified: 1000000000000001,
    131 
    -        overrides: "+WindowOuterSize",
    131 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    132 132 
             firstPartyDomain: "*",
    133 133 
             thirdPartyDomain: "example.org",
    134 134 
           },
    135 135 
         ],
    136 136 
         expects: {
    137 
    -      windowOuter: {
    137 
    +      screenAvailRect: {
    138 138 
             top: false,
    139 139 
             firstParty: false,
    140 140 
             thirdParty: true,
    ... ... @@ -153,12 +153,12 @@ const TEST_CASES = [
    153 153 
           {
    154 154 
             id: "1",
    155 155 
             last_modified: 1000000000000001,
    156 
    -        overrides: "+WindowOuterSize",
    156 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    157 157 
             firstPartyDomain: "example.net",
    158 158 
           },
    159 159 
         ],
    160 160 
         expects: {
    161 
    -      windowOuter: {
    161 
    +      screenAvailRect: {
    162 162 
             top: false,
    163 163 
             firstParty: false,
    164 164 
             thirdParty: false,
    ... ... @@ -177,13 +177,13 @@ const TEST_CASES = [
    177 177 
           {
    178 178 
             id: "1",
    179 179 
             last_modified: 1000000000000001,
    180 
    -        overrides: "+WindowOuterSize",
    180 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    181 181 
             firstPartyDomain: "example.net",
    182 182 
             thirdPartyDomain: "*",
    183 183 
           },
    184 184 
         ],
    185 185 
         expects: {
    186 
    -      windowOuter: {
    186 
    +      screenAvailRect: {
    187 187 
             top: false,
    188 188 
             firstParty: false,
    189 189 
             thirdParty: false,
    ... ... @@ -202,13 +202,13 @@ const TEST_CASES = [
    202 202 
           {
    203 203 
             id: "1",
    204 204 
             last_modified: 1000000000000001,
    205 
    -        overrides: "+WindowOuterSize",
    205 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    206 206 
             firstPartyDomain: "example.net",
    207 207 
             thirdPartyDomain: "example.com",
    208 208 
           },
    209 209 
         ],
    210 210 
         expects: {
    211 
    -      windowOuter: {
    211 
    +      screenAvailRect: {
    212 212 
             top: false,
    213 213 
             firstParty: false,
    214 214 
             thirdParty: false,
    ... ... @@ -221,13 +221,13 @@ const TEST_CASES = [
    221 221 
         },
    222 222 
       },
    223 223 
       // Test multiple entries that enable HW concurrency in the first-party context
    224 
    -  // and WindowOuter in the third-party context.
    224 
    +  // and ScreenAvailRect in the third-party context.
    225 225 
       {
    226 226 
         entires: [
    227 227 
           {
    228 228 
             id: "1",
    229 229 
             last_modified: 1000000000000001,
    230 
    -        overrides: "+WindowOuterSize",
    230 
    +        overrides: "+ScreenRect,+ScreenAvailRect",
    231 231 
             firstPartyDomain: "example.com",
    232 232 
           },
    233 233 
           {
    ... ... @@ -239,7 +239,7 @@ const TEST_CASES = [
    239 239 
           },
    240 240 
         ],
    241 241 
         expects: {
    242 
    -      windowOuter: {
    242 
    +      screenAvailRect: {
    243 243 
             top: true,
    244 244 
             firstParty: true,
    245 245 
             thirdParty: false,
    ... ... @@ -335,22 +335,22 @@ async function openAndSetupTestPageForPopup() {
    335 335 
     }
    336 336
    337 337 
     async function verifyResultInTab(tab, firstPartyBC, thirdPartyBC, expected) {
    338 
    -  let testWindowOuter = enabled => {
    338 
    +  let testScreenAvailRect = enabled => {
    339 339 
         if (enabled) {
    340 340 
           ok(
    341 
    -        content.wrappedJSObject.outerHeight ==
    342 
    -          content.wrappedJSObject.innerHeight &&
    343 
    -          content.wrappedJSObject.outerWidth ==
    344 
    -            content.wrappedJSObject.innerWidth,
    345 
    -        "Fingerprinting target WindowOuterSize is enabled for WindowOuterSize."
    341 
    +        content.wrappedJSObject.screen.availHeight ==
    342 
    +          content.wrappedJSObject.screen.height &&
    343 
    +          content.wrappedJSObject.screen.availWidth ==
    344 
    +            content.wrappedJSObject.screen.width,
    345 
    +        "Fingerprinting target ScreenAvailRect is enabled for ScreenAvailRect."
    346 346 
           );
    347 347 
         } else {
    348 348 
           ok(
    349 
    -        content.wrappedJSObject.outerHeight !=
    350 
    -          content.wrappedJSObject.innerHeight ||
    351 
    -          content.wrappedJSObject.outerWidth !=
    352 
    -            content.wrappedJSObject.innerWidth,
    353 
    -        "Fingerprinting target WindowOuterSize is not enabled for WindowOuterSize."
    349 
    +        content.wrappedJSObject.screen.availHeight !=
    350 
    +          content.wrappedJSObject.screen.height ||
    351 
    +          content.wrappedJSObject.screen.availWidth !=
    352 
    +            content.wrappedJSObject.screen.width,
    353 
    +        "Fingerprinting target ScreenAvailRect is not enabled for ScreenAvailRect."
    354 354 
           );
    355 355 
         }
    356 356 
       };
    ... ... @@ -370,8 +370,8 @@ async function verifyResultInTab(tab, firstPartyBC, thirdPartyBC, expected) {
    370 370 
       );
    371 371 
       await SpecialPowers.spawn(
    372 372 
         tab.linkedBrowser,
    373 
    -    [expected.windowOuter.top],
    374 
    -    testWindowOuter
    373 
    +    [expected.screenAvailRect.top],
    374 
    +    testScreenAvailRect
    375 375 
       );
    376 376 
       let expectHWConcurrencyTop = expected.hwConcurrency.top
    377 377 
         ? SPOOFED_HW_CONCURRENCY
    ... ... @@ -401,8 +401,8 @@ async function verifyResultInTab(tab, firstPartyBC, thirdPartyBC, expected) {
    401 401 
       );
    402 402 
       await SpecialPowers.spawn(
    403 403 
         firstPartyBC,
    404 
    -    [expected.windowOuter.firstParty],
    405 
    -    testWindowOuter
    404 
    +    [expected.screenAvailRect.firstParty],
    405 
    +    testScreenAvailRect
    406 406 
       );
    407 407 
       let expectHWConcurrencyFirstParty = expected.hwConcurrency.firstParty
    408 408 
         ? SPOOFED_HW_CONCURRENCY
    ... ... @@ -432,8 +432,8 @@ async function verifyResultInTab(tab, firstPartyBC, thirdPartyBC, expected) {
    432 432 
       );
    433 433 
       await SpecialPowers.spawn(
    434 434 
         thirdPartyBC,
    435 
    -    [expected.windowOuter.thirdParty],
    436 
    -    testWindowOuter
    435 
    +    [expected.screenAvailRect.thirdParty],
    436 
    +    testScreenAvailRect
    437 437 
       );
    438 438 
       let expectHWConcurrencyThirdParty = expected.hwConcurrency.thirdParty
    439 439 
         ? SPOOFED_HW_CONCURRENCY
    ... ... @@ -517,7 +517,7 @@ add_task(async function test_popup_inheritance() {
    517 517 
             {
    518 518 
               id: "1",
    519 519 
               last_modified: 1000000000000001,
    520 
    -          overrides: "+WindowOuterSize",
    520 
    +          overrides: "+ScreenRect,+ScreenAvailRect",
    521 521 
               firstPartyDomain: "example.com",
    522 522 
               thirdPartyDomain: "example.org",
    523 523 
             },
    ... ... @@ -532,22 +532,22 @@ add_task(async function test_popup_inheritance() {
    532 532 
       // Ensure the third-party iframe has the correct overrides.
    533 533 
       await SpecialPowers.spawn(thirdPartyFrameBC, [], _ => {
    534 534 
         ok(
    535 
    -      content.wrappedJSObject.outerHeight ==
    536 
    -        content.wrappedJSObject.innerHeight &&
    537 
    -        content.wrappedJSObject.outerWidth ==
    538 
    -          content.wrappedJSObject.innerWidth,
    539 
    -      "Fingerprinting target WindowOuterSize is enabled for third-party iframe."
    535 
    +      content.wrappedJSObject.screen.availHeight ==
    536 
    +        content.wrappedJSObject.screen.height &&
    537 
    +        content.wrappedJSObject.screen.availWidth ==
    538 
    +          content.wrappedJSObject.screen.width,
    539 
    +      "Fingerprinting target ScreenAvailRect is enabled for third-party iframe."
    540 540 
         );
    541 541 
       });
    542 542
    543 543 
       // Verify the popup inherits overrides from the opener.
    544 544 
       await SpecialPowers.spawn(popupBC, [], _ => {
    545 545 
         ok(
    546 
    -      content.wrappedJSObject.outerHeight ==
    547 
    -        content.wrappedJSObject.innerHeight &&
    548 
    -        content.wrappedJSObject.outerWidth ==
    549 
    -          content.wrappedJSObject.innerWidth,
    550 
    -      "Fingerprinting target WindowOuterSize is enabled for the pop-up."
    546 
    +      content.wrappedJSObject.screen.availHeight ==
    547 
    +        content.wrappedJSObject.screen.height &&
    548 
    +        content.wrappedJSObject.screen.availWidth ==
    549 
    +          content.wrappedJSObject.screen.width,
    550 
    +      "Fingerprinting target ScreenAvailRect is enabled for the pop-up."
    551 551 
         );
    552 552
    553 553 
         content.close();

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